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Most malignant cells displayed weak to moderate nuclear and cytoplasmic immunoreactivity. Strong staining was observed in malignant carcinoids, melanomas and gliomas along with several testicular and lung cancers.
GENE INFORMATION
Gene name
GTF3A (HGNC Symbol)
Synonyms
AP2, TFIIIA
Description
General transcription factor IIIA (HGNC Symbol)
Entrez gene summary
The product of this gene is a zinc finger protein with nine Cis[2]-His[2] zinc finger domains. It functions as an RNA polymerase III transcription factor to induce transcription of the 5S rRNA genes. The protein binds to a 50 bp internal promoter in the 5S genes called the internal control region (ICR), and nucleates formation of a stable preinitiation complex. This complex recruits the TFIIIC and TFIIIB transcription factors and RNA polymerase III to form the complete transcription complex. The protein is thought to be translated using a non-AUG translation initiation site in mammals based on sequence analysis, protein homology, and the size of the purified protein. [provided by RefSeq, Jul 2008]